International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 180 - Number 50 |
Year of Publication: 2018 |
Authors: Simran Kaur, Priyanka Bhardwaj |
10.5120/ijca2018917301 |
Simran Kaur, Priyanka Bhardwaj . Performance of FSO Links for BPSK Modulated Signal with Atmospheric Turbulence and Pointing Error. International Journal of Computer Applications. 180, 50 ( Jun 2018), 7-11. DOI=10.5120/ijca2018917301
Free-Space Optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations. This results in decreased Signal-to-Noise Ratio (SNR) and consequently impaired performance. In this paper, the Bit Error Rate (BER) performance of FSO communication systems employing Binary Phase Shift Keying (BPSK) modulation is derived. To evaluate the system error performance in weak turbulence regime, the Probability Density Function (pdf) of the received irradiance after traversing the atmosphere is modeled using the log normal distribution. The effects of pointing errors on the performance of a FSO communication system are studied